SV-200MA

Surveillance board

SV-200MA

Designed to be built in the VM-2120/-2240 amplifiers, the SV-200MA permits monitoring of individual speaker line or power amplifier failures for status indication.

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Power Source

24 V DC

Current Consumption

120 mA

Control Input and Output

Input: No-voltage make contact input, open voltage: 3.3 V DC, short-circuit current: 1 mA or less
(1) Speaker line initial setting activation signal
(2) Speaker line surveillance activation signal
Output: Open collector output, withstand voltage: 30 V DC, control current: 10 mA or less
(1) Monitoring short or open of individual speaker line (zone 1 - 5)
(2) Ground fault (insulation resistance: 50 kΩ or less)
(3) Power amplifier failures
Input/Output
Input: No-voltage make contact input, open voltage: 24 V DC, short-circuit current: 60 mA or less
Output: Open collector output, withstand voltage: 24 V DC (used with VM 24V DC output), control current: 20 mA or less
(1) Speaker Zone information/selection
(2) Power amplifier fault link
Connector: D-sub connector (25-pin, female)

Failure Detection

Power amplifier failure: 20 kHz pilot tone detection
Speaker line failure: 40 Hz impedance detection (Detectable minimu load: 5 W)

Speaker Line Surveillance

Speaker lines are automatically monitored at set time intervals

Set Time

10 - 60 min, at 10 min intervals

Operating Temperature

0 °C to +50 °C

Operating Humidity

90 % RH or less (must be free from dew condition)

Dimensions

90 (W) x 20.6 (H) x 157 (D) mm